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### [Analog] bit operations for adding and subtracting

1 /*2 * unit Plus: Find and + corresponding bit operation, analysis truth table to derive is bitwise XOR ^3 * Carry: Can be used 4 * Add the operation to not carry, the code is as follows:5 *6 */7LL QuickAdd (intXinty) {8 intXR = x ^ y;//Plus9 intnd = x y;//Statistics RoundingTen while(nd) { One intXR1 =XR; A intNd1 = nd 1; -XR = xr1 ^ nd1;//Plus -nd = XR1 nd1;//Statistics Rounding the } - returnXR; - } - /* + * will be subtracted from the opposite number (

### Adding and subtracting using bit arithmetic

I learned a bit about it today. Adding and subtracting with bitwise arithmetic because negative numbers are stored in a way that is complementary, the addition is realized by subtraction.The addition operation is based on a theorem such as:A + b = a^b + ((A B) It's good to go back to the point of rounding or zero.Code:1#include 2#include 3#include 4 using namespacestd;5 6 int Get(intAintb) {7 intc = a

### ThinkPHP User-Defined Function solves the method of adding and subtracting template labels. thinkphp Template

ThinkPHP User-Defined Function solves the method of adding and subtracting template labels. thinkphp Template This example describes how ThinkPHP UDF solves the addition and subtraction of template labels. Share it with you for your reference. The details are as follows: In actual projects, we often need to add or subtract tag variables. However, in ThinkPHP, direct operations on Template variables are no

### Code for adding or subtracting the number of Shopping Cart items and jQuery item quantity implemented by jquery

Code for adding or subtracting the number of Shopping Cart items and jQuery item quantity implemented by jquery This example describes how to add or subtract the number of cart items in jQuery. We will share this with you for your reference. The details are as follows: Today, the netizen Cui er asked me a question when using Jquery to add or subtract the number of items in the shopping cart. I then helped

### PCB WCF web interface after adding or subtracting parameters, if the client is not updated, whether the client is affected, the evaluation test

" ; " 2 " ; string result = weborc2_.getinfotest (mod_); // return: getinfotest parameter Test 1__2After the change--Server (MoD Class 1 parameters): /// ///Test Web Interface (single-valued parameter)/// /// /// Public stringgetinfotest (modtest MoD) {return\$"getinfotest pass Test {mod.ar1}"; } Public classModtest { Public stringAR1 {Get;Set; } }Client Call (MoD Class 2 parameters)--client does not update int

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### The solution of a long decimal point when adding and subtracting JS small number

1. Questions:This happens in the usual code, and the result of parsefloat (11.3-10.1) operation is still 1.200000000000001.code example:var arr = [0.0111,11.002,0.3,1.5,1.61var 0 = ={ + + Item }) Console.log (total) The result of the return---14.423100000000002, which is illogical.2. Solution:Here's a practical workaround for some floating-point application functions in math such as: parsefloat () and Math.floor ()The code is as follows:var arr = [0.0111,11.002,0.3,1.5,1.61var 0 = ={

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